/*
 * Copyright 2013 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.yarn.listener;

/**
 * Interface used for container to notify its state.
 *
 * @author Janne Valkealahti
 *
 */
public interface ContainerStateListener {

	/**
	 * Invoked when container state is changing.
	 *
	 * @param state the {@link ContainerState}
	 * @param exit the requested exit status
	 */
	void state(ContainerState state, Object exit);

	/**
	 * Enum for container states
	 */
	public enum ContainerState {

		/** Container completed state */
		COMPLETED,

		/** Container failed state */
		FAILED
	}

}
